The following source table depicts partial results of a fictional study investigating whether students' stress levels vary as a function of the type of residence they inhabit (house, apartment, dorm room) and the noise volume to which they are subjected (soft, medium, loud)

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The following source table depicts partial results of a fictional study investigating whether students' stress levels vary as a function of the type of residence they inhabit (house, apartment, dorm room) and the noise volume to which they are subjected (soft, medium, loud). Six participants were recruited for each cell of the study.

source	SS	df	MS	F
residence	7.64	2
noise		2	1.11
residence X noise
within	14.36		0.319
total	27.84

1) Using the source table and information provided, calculate the sum of squares for the interaction.

a 5.31

b. 2.22

c. 4.81

d.3.62

2) Using the source table and information provided, which of the effects is significant?

a. the interaction of residence type and noise level

b. the main effect for noise

c. the main affect for residence

d. all three effects are significant